Extraction apparatus.



J. MERZ.

EXTRACTION APPARATUS. I APPLICATION FILED mm. a, 1911.

1 70,828, Patented Aug. 19, 1913 Fig.1. 1

I l l I El [e ffff c JOSE]? KEBZ, OF BR'U'NN, AUSTRIA-HUNGARY.

EXTRACTION AFPARATUS.

Specification of Letters Patent. Patented Aug. 19, 1913. Application filed June 5, 1911.

Serial No. 631,459.

To all whom it may concern:

Be it known that I, J osnr Mnnz', engineer, a subject of the Austro-Hungarian Emperor, and residing atWannieckstrasse 12, Briinn, Austria-Hungary, have invented Improvements in and Relating to Extraction Apparatus, of which the following is a specification.

The usual extraction apparatus operate either only! with solvents or only with vapors 7 thereof.

- materials.

The first method in which solvents are employed and which is rincipally used in connection with seeds and'pulverulen-t materials presents the defect that moist residuals are formed which require subsequent drying and this entails increased cost. of construction and working expenses. The other process in which solvent vapors are employeddry residuals are also formed but this process can only be adopted successfully in the case of bones and similar coarse grained porous moist materials and cannot be employed extraction of pulverulent The means for carrying these processes into practice present various constructional modifications according as they are intended for use for extraction by means of solvents or for extraction by means of vapors.

F or the extraction of most materials-it is advantageous for theextraction to take place both by means of solvents and by means of vapors and this with the object either'of obtainig dry residuals or for in creasing the yield. It is also advantageous in the'case of materials which at high temperatures furnish liquefiable-extracts tooperate first of all with vapor in order to cause the extractive substance to melt and then to lixiviatethe extractive material with'the solvent. 7

The present invention has for its object an roce'sses to be combined in any desired or er. In accordance with the invention this result is attained by a reversing devicewhich renders at possible to conduct the'ex'traction agent om an evaporating chamber aboveor below the material in the extraction chamber. In order to avoid losses of heat in the re versing device it is advantageous to arrange it in the extraction a paratus.

An embodiment oi the invention is illus: trated in the accompanying drawing in which; p

cover of the apparatus.

having an ex1t Z coolsand' condenses the as-.

Figure 1 is a vertical section and Fig. 2 is a plan.

In the embodiment of the invention here illustrated the evaporating apparatus a is combined with the extractor b to form a single vessel, the two being separated from each other by a partition (2. In the extractor one or more upwardly directed pipes 03 are arranged; these pipes open at their lower ends into the chamber a so that. the vapors ascending therefrom are able to pass into the extractor over the material placed upon the sieve bottom '6. Pipes f branch from the pipe (Z and open into the extractor over the partition 0 and are adapted to conduct the vapors ascending from the evaporating chamberbeneath the materiaL' A reversing member 9 which is adapted to be operated from the exterior is mounted inthe pipe 03 and according to the position in which it is set it conducts the vapors ascending from the lower chamber (1 either over the material or through the pipes f beneath 1t. A cooling apparatus 5 which preferably acts as a reflex cooler is provided beneath the Said apparatus cending vapors. The solvent may be introcluced into the chamber a through any suitable inlet, for example, as conventionally.

illustrated at s and the contents of said chamber may be withdrawn through an outlet t.

The operation of the apparatus is as follows: When the reversing member occupies the position in which the 'upper end of the pipe (1 is closed, the extraction is effected by means. of the vapors of the solvent whichflow through the material from below; this is the vapor extraction process. versing, member is-reversed the vapors ascending from the chamber a pass through the pipe (2 into the extraction chamber and are condensed 'by the cooling apparatus ar-' ranged beneath the cover so that they pene trate the material in liquid form; this is the li uid extraction process. When 1t 15 desired wit-h fine grained or pulverulent materlals the liquid extraction operation is 'eifected If the reto obtain a dry residue when dealing m the known manner in thefirst place and when this operation is completedthe vapors of the solvent are conducted downward and through the material by reverslng the valve g from the. exterior. These vapors. which can if necessary heated by a heating coil ii located over the partition or atany other part of their path are forced through the mass until it is freed from moisture.

Having now particularly described and ascertained the nature of my said invention and in what-manner the same is to be performed, I declare that What I claim is':

1. An extraction apparatus of the character described comprising a caslng havlng its interior-divided into an evaporating chamber and an extraction chamber,a condu1t connecting said chambers and arranged ent rely withm the casmg, and means operable from outside the casing for causing) vapor conducted from the evaporating chamber to the extraction chamber to enter the latter above or below the material to be treated therein, as desired. 7

2. An extraction apparatus of the charactervdescribed comprising a casing having its interior divided into an evaporating I chamber. and an extraction chamber,v means for conducting vapor from the evaporating chamber to the extraction chamber, a cooling device forcondensing such vapor in the extraction chamber, and adjustable means withiii the extraction chamber for directing said vapors against the cooling device or beneath the material vin the extraction chamber.

3. An extraction apparatus of the character described comprising a casing having its interior divided into an evaporating chamber and an extraction chamber, a conduit connecting said chambers and arranged entirely within the casing, said conduit having two outlets .one adjacent the upper end l ofthe extraction chamber and the other below the support for material to be treated within such chamber,a cooling device within the upper portion of the extraction chamher, and means operable from outside the casing for controlling the passage of vapors through both outlets of the conduit.

4. An extraction apparatus of the character described comprising a casing having its interior divided into an evaporating chamber and an extraction chamber, a perforated supportfor material to'be treated extraction chamber beneath the perforated support therein.

' In testimony whereof I aflix my slgnature in presence of two witnesses.

J OSEF MERZ.

Witnesses I HUGO Rink, AUcUs'r Fnccnn. 

